import { ApiProperty } from '@nestjs/swagger';
import {
  IsString,
  IsNotEmpty,
  IsOptional,
  IsBoolean,
  IsArray,
  MaxLength,
  MinLength,
} from 'class-validator';

export class CreateArticleDto {
  @ApiProperty({
    description: 'Article title',
    example: 'Getting Started with NestJS',
    minLength: 3,
    maxLength: 200,
  })
  @IsString()
  @IsNotEmpty()
  @MinLength(3)
  @MaxLength(200)
  title: string;

  @ApiProperty({
    description: 'Short preview/excerpt of the article (max 500 characters)',
    example: 'Learn how to build scalable Node.js applications with NestJS framework...',
    maxLength: 500,
  })
  @IsString()
  @IsNotEmpty()
  @MaxLength(500)
  preview: string;

  @ApiProperty({
    description: 'Full article content (Markdown supported)',
    example: '# Introduction\n\nNestJS is a progressive Node.js framework...',
  })
  @IsString()
  @IsNotEmpty()
  content: string;

  @ApiProperty({
    description: 'Cover image URL',
    example: 'https://example.com/images/nestjs-cover.jpg',
    required: false,
  })
  @IsString()
  @IsOptional()
  coverImage?: string;

  @ApiProperty({
    description: 'Article tags',
    example: ['nestjs', 'nodejs', 'typescript'],
    type: [String],
    required: false,
  })
  @IsArray()
  @IsString({ each: true })
  @IsOptional()
  tags?: string[];

  @ApiProperty({
    description: 'Whether the article is published immediately',
    example: false,
    default: false,
    required: false,
  })
  @IsBoolean()
  @IsOptional()
  published?: boolean;
}